That vehicle was found abandoned in St Johns Hill a short time later.
Police then responded to a report of a burglary after a man entered a residential property in the area of Halswell Street and Peat Street.
Police believe all of these incidents are linked and would like to hear from anyone who saw a grey Toyota Yaris driving on SH3 or in the Whanganui CBD on Tuesday afternoon, or anyone who saw the collision at the Guyton St intersection by the Whanganui District Council.
Police are also interested to speak to anyone who saw any suspicious activity in the Halswell and Peat St area, also on Tuesday, between 2.30pm and 4pm.
Anyone with information should contact police via 105, or anonymously via Crime Stoppers by contacting 0800 555 111, and quoting the event number P051430232.